Atmospheric Biogenic Organic Emissions: Missing Compounds and Unrepresented Processes

该项目包括一个联合的实验室建模方法，以确定植物和生物材料排放到大气中的缺失的生物挥发性化合物（BVOC）。研究微生物对挥发性有机化合物排放的影响是该项目的一个特别创新的方面。关于缺少的挥发性有机化合物排放的信息将被纳入新版的自然气体和气溶胶排放模型（MEGAN3）。本研究解决了四个科学问题：(1)极端天气和污染胁迫导致的BVOC排放是否会影响大气气溶胶和氧化剂的分布？(2)生活在叶片表面的微生物是否调节BVOC排放到大气中并改变其对臭氧和气溶胶的影响？(3)缺少的双挥发性有机化合物对气溶胶和臭氧的总产生有贡献吗？(4)模型预测的空气质量和气候对缺失的挥发性有机化合物和未代表的排放过程相关的反馈有多敏感？本研究的预期成果包括定量了解BVOC在大气化学中的作用，改善空气质量和气候预测，以及优化土地利用、空气质量和气候管理的更有效策略。

This project consists of a combined laboratory-modeling approach to identifying missing biogenic volatile compounds (BVOC) emitted into the atmosphere by plant and biological material. Research into the influence of microbes on BVOC emissions is a particularly innovative aspect of this project. Information on missing BVOC emissions will be integrated into a new version of the Model of Emissions of Gases and Aerosols from Nature (MEGAN3) Model.Four scientific questions are addressed by this study: (1) Can BVOC emissions induced by extreme weather and pollution stress influence atmospheric distributions of aerosol and oxidants? (2) Do microbes living on leaf surfaces regulate BVOC emissions into the atmosphere and modify their impact on ozone and aerosol? (3) Do missing BVOC compounds contribute to the total production of aerosol and ozone? (4) How sensitive are model predictions of air quality and climate to feedbacks associated with missing BVOC and unrepresented emission processes? The expected outcomes of this research include a quantitative understanding of the role of BVOC in atmospheric chemistry, improved air quality and climate predictions, and more effective strategies to optimize land-use, air quality, and climate management.